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butler
04-16-2019, 09:29 PM
Prefilter question?

After concentrating..

Rinse for 100 gallons
Switch prefilter to my ‘wash’ filter
Wash 30 mins or until RO turns off

My question is do I now leave that prefilter in and rinse my last 150 gallons or do I put a new prefilter right after wash then rinse last 150 gallons
bj's sugaring
04-16-2019, 09:42 PM
I have a different RO, but I leave my wash filter in for everything wash/rinse.
Asa Matras
04-16-2019, 09:46 PM
We have a 600, we leave the wash filter for the final rinse
Russell Lampron
04-17-2019, 06:13 AM
Same here, I leave my wash filter in for the entire wash and rinse cycle.
butler
04-17-2019, 08:19 AM
Perfect, thanks guys... just wanted to make sure I was doing it in proper order.
VT_K9
04-17-2019, 09:51 PM
We finished running the RO and then switched to the the wash filter, rinsed 100 gallons, ran the wash, rinsed with 150 gallons.

Mike
Mead Maple
04-18-2019, 05:47 AM
Prefilter question?

After concentrating..

Rinse for 100 gallons
Switch prefilter to my ‘wash’ filter
Wash 30 mins or until RO turns off

My question is do I now leave that prefilter in and rinse my last 150 gallons or do I put a new prefilter right after wash then rinse last 150 gallons

For information sake (rookie) why would you change filters? Is it a smaller micron thus letting more liquid flow since it is permeate and already spotless?


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maple flats
04-18-2019, 08:31 AM
You only need to change the pre-filter after the wash and final rinse are done. The exception to that is if you are running the RO to concentrate sap and the feed pressure drops too low. On my RO, that pressure is 20 psi. Under that the high pressure pump can be starving for sap.
Mead Maple
04-18-2019, 01:32 PM
You only need to change the pre-filter after the wash and final rinse are done. The exception to that is if you are running the RO to concentrate sap and the feed pressure drops too low. On my RO, that pressure is 20 psi. Under that the high pressure pump can be starving for sap.

Totally get it.

What psi are you generally running your feed pump? Was curious for a shallow well pump homemade build


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